Motown legend Diana Ross. Pop-soul princess Brandy. Together in one movie. It must be sweeps

Diana Ross and Brandy. It sounds like the start of a movie pitch. Turns out, it's a pitch that worked: the two singers, one a legend and the other a Gen-Y sensation, are co-starring in the dramatic TV movie Double Platinum, airing this Sunday at 9 p.m. E.T. on ABC.